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https://issues.apache.org/jira/browse/DRILL-4836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15412769#comment-15412769
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Abhishek Girish commented on DRILL-4836:
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Per [~sudheeshkatkam]'s comments, this is a regression from Feb'16.
Current:
https://github.com/apache/drill/blob/master/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/store/ZookeeperPersistentStore.java#L96
Previous:
https://github.com/apache/drill/blob/9a3a5c4ff670a50a49f61f97dd838da59a12f976/exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/zk/ZkAbstractStore.java#L204
> ZK Issue during Drillbit startup, possibly due to race condition
> ----------------------------------------------------------------
>
> Key: DRILL-4836
> URL: https://issues.apache.org/jira/browse/DRILL-4836
> Project: Apache Drill
> Issue Type: Bug
> Components: Server
> Reporter: Abhishek Girish
> Assignee: Paul Rogers
> Fix For: 1.8.0
>
>
> During a parallel launch of Drillbits on a 4 node cluster, I hit this issue
> during startup:
> {code}
> Exception in thread "main"
> org.apache.drill.exec.exception.DrillbitStartupException: Failure during
> initial startup of Drillbit.
> at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:284)
> at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:261)
> at org.apache.drill.exec.server.Drillbit.main(Drillbit.java:257)
> Caused by: org.apache.drill.common.exceptions.DrillRuntimeException: unable
> to put
> at
> org.apache.drill.exec.coord.zk.ZookeeperClient.put(ZookeeperClient.java:196)
> at
> org.apache.drill.exec.store.sys.store.ZookeeperPersistentStore.putIfAbsent(ZookeeperPersistentStore.java:94)
> ...
> at org.apache.drill.exec.server.Drillbit.run(Drillbit.java:113)
> at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:281)
> ... 2 more
> Caused by: org.apache.zookeeper.KeeperException$NodeExistsException:
> KeeperErrorCode = NodeExists for /drill/sys.storage_plugins/dfs
> at
> org.apache.drill.exec.coord.zk.ZookeeperClient.put(ZookeeperClient.java:191)
> ... 7 more
> {code}
> And similarly,
> {code}
> Caused by: org.apache.zookeeper.KeeperException$NodeExistsException:
> KeeperErrorCode = NodeExists for /drill/sys.storage_plugins/kudu
> {code}
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